GCC 4.0 (part 2)

Message

Master Shake · Post by **Master Shake** » Sun Jul 10, 2005 2:33 pm

rel wrote: And I don't even know how to unmask ~*

put the package that you want unmasked in /etc/portage/package.unmask, you might have to create it. Should look something like this:

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=x11-base/xorg-x11-6.8.99.13

if you were to unmask that new x11.

BTW is -Os too much optimization for 4.0.1?

fuoco · Post by **fuoco** » Sun Jul 10, 2005 8:20 pm

dev-libs/pwlib is a package in portage that doesn't compile with gcc-4.0.1, anyone got a patch ? (latest version)

rhill · Post by **rhill** » Mon Jul 11, 2005 7:57 am

Master Shake wrote:BTW is -Os too much optimization for 4.0.1?

It shouldn't be too much optimization, in fact it's less than -O2 or -O3 because it just disables optimization flags that increase code size.

However, there have been a few reports that -Os actually bloats code size rather than minimize it. I filed one bug report for a C++ regression but closed it later since I'm ignorant about C++ and wasn't sure blaming the compiler was correct. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21529 and http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21680 for other examples of this bug that still exists in 4.0.

rhill · Post by **rhill** » Mon Jul 11, 2005 8:08 am

TrueDFX wrote:If you're mostly using gcc 3.x (or even 2.95.3), things will indeed likely break if you switch to gcc 4. Plenty of stuff doesn't yet work with it

I disagree. While there may be some corner cases floating around, the number of packages that are still broken with gcc 4 are pretty few.

and as it's relatively new there may also be bugs that have yet gone undetected in gcc itself. OTOH, if you're currently using gcc 4.0.0, please do upgrade, since 4.0.1 fixes some severe code generation bugs from 4.0.0.

I second that. There are a lot of regressions in 4.0 that, while not show-stopping, are still problems that need to be fixed.

rhill · Post by **rhill** » Mon Jul 11, 2005 8:10 am

quark wrote:
dirtyepic wrote:changes since 20050602:
i'm going to start leaving out fortran fixes because i don't think anyone is interested in them. if you are just let me know. it's not a problem to keep them in.
Well.. at least I am. Fortran compilar was the only reason for me to update to gcc-4 -series.

No problem. I'll include them in the next update.

rhill · Post by **rhill** » Mon Jul 11, 2005 8:45 am

Sorry for the multiple posts. I've been out of town for work all week so i'm just catching up.

Now that 4.1 has hit stage 3 (meaning all major projects have more or less been committed and the branch is open for regression fixes only), I'm guessing that more people will want to start testing it. Right now, this thread is mainly package fixes and migration support. I'm thinking that it would be best to start a new thread for 4.1, just to keep things seperated as it's a very different animal at this point. That way we can keep things on topic and focus on whichever version without having everything mixed together and possibly causing confusion when people forget to mention what compiler they're using.

I've started http://forums.gentoo.org/viewtopic-t-358315.html in Unsupported Software for 4.1 discussion and support. I just threw some notes about 4.1 on there for now, but I'm planning to expand it with some more useful info for people who want to start testing it sometime soonish (probably next weekend since i'm back on the road tomorrow). Any ideas for stuff we could include are extremely welcome.

TrueDFX · Post by **TrueDFX** » Mon Jul 11, 2005 11:32 am

dirtyepic wrote:
TrueDFX wrote:If you're mostly using gcc 3.x (or even 2.95.3), things will indeed likely break if you switch to gcc 4. Plenty of stuff doesn't yet work with it
I disagree. While there may be some corner cases floating around, the number of packages that are still broken with gcc 4 are pretty few.

wxGTK 2.4 and ocaml both fail to work properly with gcc 4, and those two alone are needed for dozens of packages that would therefore also be impossible to build without switching back and forth between gcc versions.

Xake · Post by **Xake** » Mon Jul 11, 2005 12:58 pm

TrueDFX wrote:wxGTK 2.4 and ocaml both fail to work properly with gcc 4, and those two alone are needed for dozens of packages that would therefore also be impossible to build without switching back and forth between gcc versions.

Indeed building packages against wxGTK2.4 compiled with GCC4 brings mayor problems but it seems like wbGTK2.6 works with GCC4 (many programs seems to work even if the ebuild doesn't say so, but you may encounter minor problems).
For ocaml there is a patch in b.g.o orginating from Fedora that seems to work for at least me. I only waiting for the patch to become comitted inte portage.

TrueDFX · Post by **TrueDFX** » Mon Jul 11, 2005 3:11 pm

Xake wrote:Indeed building packages against wxGTK2.4 compiled with GCC4 brings mayor problems but it seems like wbGTK2.6 works with GCC4 (many programs seems to work even if the ebuild doesn't say so, but you may encounter minor problems).

That's true, but you'll have to build the programs manually, since the ebuilds will abort if the proper wxGTK version isn't found. Unless there's been a recent change I'm not aware of, that is.

For ocaml there is a patch in b.g.o orginating from Fedora that seems to work for at least me. I only waiting for the patch to become comitted inte portage.

Having commented on the patch in bugzilla myself, that doesn't surprise me

Gentree · Post by **Gentree** » Mon Jul 11, 2005 10:16 pm

any great diffs from [4.0.1_pre20050702]?

not seeing too many probs on this system but I have not done much with it yet.

however nano segfaults if I resize the terminal.

Xake · Post by **Xake** » Mon Jul 11, 2005 10:23 pm

TrueDFX wrote:
Xake wrote:Indeed building packages against wxGTK2.4 compiled with GCC4 brings mayor problems but it seems like wbGTK2.6 works with GCC4 (many programs seems to work even if the ebuild doesn't say so, but you may encounter minor problems).
That's true, but you'll have to build the programs manually, since the ebuilds will abort if the proper wxGTK version isn't found. Unless there's been a recent change I'm not aware of, that is.

Well poEdit build pretty well here after I fixed the dependency. This with only wxGTK2.6 merged. Had problem the first time i tried to merge poedit, but efter remerging wxgtk2.6 that problem went away (think it has something to do with 2.4 unemerged after 2.6 that went wrong).

For ocaml there is a patch in b.g.o orginating from Fedora that seems to work for at least me. I only waiting for the patch to become comitted inte portage.
Having commented on the patch in bugzilla myself, that doesn't surprise me

True. I just hope it soon will be commited. Hate to have a 'too big' overlay. Don't really know why....

Gentree · Post by **Gentree** » Mon Jul 11, 2005 10:27 pm

[off]I am just digging into wxGTK to poke about with the fileopenDlg which is bugging me.

I posted a couple of times on g-nome forums but they don't want to know what users actually think they need , they have paid some suits to do a professional user interaction study.

I want to see '..' and '.' in the file list when I select to see hidden files.

anyone familiar what that code and got any pointers that I can derefernce?
[/off]

heijs · Post by **heijs** » Tue Jul 12, 2005 9:45 am

Does anyone know if there is a patch to compile mythtv?

Master Shake · Post by **Master Shake** » Tue Jul 12, 2005 3:18 pm

I'm getting this error with compiling the kernel. I think its the new version 2.6.12-r4

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CC      drivers/video/vesafb-thread.o
drivers/video/vesafb-thread.c:40: error: static declaration of 'errno' follows non-static declaration
include/linux/unistd.h:4: error: previous declaration of 'errno' was here
make[2]: *** [drivers/video/vesafb-thread.o] Error 1
make[1]: *** [drivers/video] Error 2
make: *** [drivers] Error 2

Does anyone else get this when compiling the kernel with gcc 4.0.1?

Xake · Post by **Xake** » Tue Jul 12, 2005 4:16 pm

Master Shake wrote:I'm getting this error with compiling the kernel. I think its the new version 2.6.12-r4
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CC      drivers/video/vesafb-thread.o
drivers/video/vesafb-thread.c:40: error: static declaration of 'errno' follows non-static declaration
include/linux/unistd.h:4: error: previous declaration of 'errno' was here
make[2]: *** [drivers/video/vesafb-thread.o] Error 1
make[1]: *** [drivers/video] Error 2
make: *** [drivers] Error 2
Does anyone else get this when compiling the kernel with gcc 4.0.1?

If you read one or two pages back in this thread you will see that the correct way (and the way it is fixed upstream) is to edit /usr/src/linux/drivers/video/vesafb-thread.c and remove line 40 (the one with errno)

Master Shake · Post by **Master Shake** » Tue Jul 12, 2005 4:30 pm

Thanks. Sorry I haven't been following this too closely, but I try to read up on the newer gcc.

Gestalt73 · Post by **Gestalt73** » Wed Jul 13, 2005 12:28 am

dev-libs/pwlib is a package in portage that doesn't compile with gcc-4.0.1, anyone got a patch ? (latest version)

Found patch on debian-bugs and posted to Bugzilla here:
http://bugs.gentoo.org/attachment.cgi?i ... ction=view
Patch: http://bugs.gentoo.org/attachment.cgi?i ... ction=view

Alan

d4rkn0va · Post by **d4rkn0va** » Wed Jul 13, 2005 5:03 pm

VNC doesn't want to compile, too:

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attributes.c: In function 'XpGetConfigDirBase':
attributes.c:152: warning: assignment from incompatible pointer type
attributes.c:152: warning: comparison of distinct pointer types lacks a cast
attributes.c:153: warning: assignment from incompatible pointer type
attributes.c:155: warning: return from incompatible pointer type
attributes.c: In function 'BuildPrinterAttrs':
attributes.c:327: warning: unused variable 'dirName'
attributes.c: In function 'XpGetOneAttribute':
attributes.c:627: warning: unused variable 'retVal'
attributes.c: In function 'AppendEntry':
attributes.c:819: warning: 'return' with no value, in function returning non-void
attributes.c:860: warning: control reaches end of non-void function
attributes.c: In function 'XpGetAttributes':
attributes.c:878: warning: unused variable 'retVal'
attributes.c: At top level:
attributes.c:1094: error: static declaration of 'ExecCommand' follows non-static declaration
attributes.h:113: error: previous declaration of 'ExecCommand' was here
attributes.c: In function 'SendFileToCommand':
attributes.c:1187: warning: implicit declaration of function 'initgroups'
attributes.c:1202: warning: unused variable 'res'
attributes.c: In function 'VectorizeCommand':
attributes.c:1440: warning: unused variable 'i'
attributes.c:1439: warning: unused variable 'curTok'
attributes.c: In function 'XpSubmitJob':
attributes.c:1466: warning: unused variable 'cmdOpt'
attributes.c:1518: warning: control reaches end of non-void function
attributes.c: In function 'XpGetTrayMediumFromContext':
attributes.c:1590: warning: unused variable 'pLast'
attributes.c:1590: warning: unused variable 'pE'
attributes.c:1590: warning: unused variable 'pS'
distcc[11950] ERROR: compile attributes.c on localhost failed
make[5]: *** [attributes.o] Error 1
make[5]: Leaving directory `/var/tmp/portage/vnc-4.0-r1/work/vnc-4.0-unixsrc/xc/programs/Xserver/Xprint'
make[4]: *** [Xprint] Error 2
make[4]: Leaving directory `/var/tmp/portage/vnc-4.0-r1/work/vnc-4.0-unixsrc/xc/programs/Xserver'
make[3]: *** [all] Error 2
make[3]: Leaving directory `/var/tmp/portage/vnc-4.0-r1/work/vnc-4.0-unixsrc/xc/programs'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/var/tmp/portage/vnc-4.0-r1/work/vnc-4.0-unixsrc/xc'
make[1]: *** [World] Error 2
make[1]: Leaving directory `/var/tmp/portage/vnc-4.0-r1/work/vnc-4.0-unixsrc/xc'
make: *** [World] Error 2

!!! ERROR: net-misc/vnc-4.0-r1 failed.
!!! Function src_compile, Line 71, Exitcode 2
!!! (no error message)

emerge --info

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Portage 2.0.51.22-r1 (default-linux/x86/2005.0, gcc-4.0.1, glibc-2.3.5.20050421-r0, 2.6.11-gentoo-r6 i686)
=================================================================
System uname: 2.6.11-gentoo-r6 i686 AMD Athlon(tm) 
Gentoo Base System version 1.6.12
distcc 2.18.3 i686-pc-linux-gnu (protocols 1 and 2) (default port 3632) [enabled]
dev-lang/python:     2.3.5, 2.4.1-r1
sys-apps/sandbox:    1.2.10
sys-devel/autoconf:  2.13, 2.59-r7
sys-devel/automake:  1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.5
sys-devel/binutils:  2.16.1
sys-devel/libtool:   1.5.18-r1
virtual/os-headers:  2.6.11-r2
ACCEPT_KEYWORDS="x86 ~x86"
AUTOCLEAN="yes"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-O0 -march=athlon -pipe -ffast-math"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3/share/config /usr/lib/X11/xkb /usr/share/config /var/qmail/control"
CONFIG_PROTECT_MASK="/etc/gconf /etc/splash /etc/terminfo /etc/env.d"
CXXFLAGS="-O0 -march=athlon -pipe -ffast-math -fvisibility-inlines-hidden"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoconfig ccache distcc distlocks sandbox sfperms strict"
GENTOO_MIRRORS="ftp://ftp.wh2.tu-dresden.de/pub/mirrors/gentoo http://ftp.belnet.be/mirror/rsync.gentoo.org/gentoo"
MAKEOPTS="-j7"
PKGDIR="/usr/portage/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/portage/local"
SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage"
USE="x86 3dnow 3dnowext X acpi alsa apache2 avi bash-completion bitmap-fonts bzip2 cdr crypt curl dvd dvdr emboss encode esd fam flac font-server foomaticdb gd gif gpm imlib java jpeg kerberos ldap libg++ libwww mad mikmod mmx motif mozilla mozsvg mp3 mpeg mysql mythtv ncurses nls nptl nptlonly ogg oggvorbis opengl openssh oss pam pdflib perl php5 png python quicktime readline samba sdl server session spell ssl svga tcpd theora tiff truetype truetype-fonts type1-fonts vorbis winbind xml xml2 xmms xv xvid zlib userland_GNU kernel_linux elibc_glibc"
Unset:  ASFLAGS, CTARGET, LANG, LC_ALL, LDFLAGS, LINGUAS

I guess I'll have to emerge --resume --skipfirst for now, but hints or tips would be appreciated

Master Shake · Post by **Master Shake** » Thu Jul 14, 2005 9:51 pm

I can't seem to get kdelibs to compile under 4.0.1, can someone help me or do I have to just compile with 3.4.4?

devsk · Post by **devsk** » Thu Jul 14, 2005 10:16 pm

d4rkn0va wrote:VNC doesn't want to compile, too:

apply:

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--- xc/programs/Xserver/Xprint/attributes.c.orig        2005-07-13 00:00:16.048568000 -0700
+++ xc/programs/Xserver/Xprint/attributes.c     2005-07-13 00:00:19.165547000 -0700
@@ -1089,7 +1089,7 @@
  * We wait for the command to terminate before continuing to ensure that
  * we don't delete the job file before the spooler has made a copy.
  */
-static void
+void
 ExecCommand(pCommand, argVector)
     char *pCommand;
     char **argVector;

devsk · Post by **devsk** » Thu Jul 14, 2005 10:17 pm

Master Shake wrote:I can't seem to get kdelibs to compile under 4.0.1, can someone help me or do I have to just compile with 3.4.4?

post error. I did compile kdelibs with 401.

Gestalt73 · Post by **Gestalt73** » Thu Jul 14, 2005 11:53 pm

I hacked the tightvnc-1.3_alpha5 ebuild for alpha7 and posted to bugzilla here:
http://bugs.gentoo.org/show_bug.cgi?id=99054

This build compiles successfully with GCC401 and GCC410.

Alan

HardenCoonor · Post by **HardenCoonor** » Fri Jul 15, 2005 10:39 am

I can't seem to get kdelibs to compile under4 .0.1, can someone help me or do I have to just compile with3 .4.4?

post error. I did compile kdelibs with401 .

I also had problems compiling kdelibs. At first something with kab, which turned out to be not really a problem with compiling, but with linking. Removing my custom LDFLAGS -Wl,-O1 -Wl,--sort-common helped, after that it compiled fine, even with --enable-new-ldflags.

But now i have the problem that krusader-1.60 can't be compiled, some code is not accepted (A structure is not properly defined). Maybe someone knows a patch.

rhill · Post by **rhill** » Sat Jul 16, 2005 5:47 am

TrueDFX wrote:[wxGTK 2.4 and ocaml both fail to work properly with gcc 4, and those two alone are needed for dozens of packages that would therefore also be impossible to build without switching back and forth between gcc versions.

which is why you should be running the ~arch versions of packages (ie wxGTK 2.6.1) when using gcc 4.

there might be stuff that doesn't build against 2.6.1 but I don't know any specific examples off the top of my head. the wxwidgets eclass should cover this but not everything's been updated to use it of course.

TrueDFX · Post by **TrueDFX** » Sat Jul 16, 2005 7:34 am

That's like saying if you're using gcc 4, you should be using the ~x86 version of gtk+ (i.e. gtk 2.x), not gtk 1.2*. Doesn't change the fact they're different libraries which can be installed side-by-side, nor does it change the fact that a whole lot of software only works with the [ gtk+ 1.2 / wxGTK 2.4 ] and explicitly depends on that version. (No list right now, but at my previous message it was 30-something packages, IIRC.)

Update: I see the list has drastically decreased:

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app-emulation/vm-arm
app-misc/tipptrainer
net-misc/multiimonc
app-emulation/bochs
media-sound/freqtweak
media-sound/audacity
media-video/dvdstyler
mail-client/mahogany
games-strategy/scorched3d
app-text/biblestudy
dev-java/wx4j [library]
dev-ruby/wxruby [library]

There's at least two major showstoppers there though: bochs and audacity.

GCC 4.0 (part 2)

mythtv

Patch for pwlib-1.8.4

TightVNC ebuild posted